-er -ic c-- ccc cce ccf cci ccm cco ccr ccs ce- cec cee cef cei cem ceo cer ces cfc cfe cff cfi cfm cfo cfr cfs ci- cic cie cif cii cim cio cir cis cmc cme cmf cmi cmm cmo cmr cms co- coc coe cof coi com coo cor cos crc cre crf cri crm cro crr crs csc cse csf csi csm cso csr css ec- ecc ece ecf eci ecm eco ecr ecs eec eee eef eem eeo eer ees ef- efc efe eff efi efm efo efr efs eic eie eif eii eim eio eir eis em- emc eme emf emi emm emo emr ems eo- eoc eoe eof eoi eom eoo eor eos erc ere erf eri erm ero err ers es- esc ese esf esi esm eso esr ess fcc fce fcf fci fcm fco fcr fcs fec fee fef fei fem feo fer fes ffc ffe fff ffi ffm ffo ffr ffs fic fie fif fii fim fir fis fmc fme fmf fmi fmm fmo fmr fms foc foe fof foi fom foo for fos frc fre frf fri frm fro frr frs fsc fse fsf fsi fsm fso fsr fss i-f icc ice icf ici icm ico icr ics ie- iec iee ief iei iem ier ies ifc ife iff ifi ifm ifo ifr ifs iic iie iif iii iim iio iir iis im- imc ime imf imi imm imo ims io- ioc ioe iof ioi iom ioo ior ios ir- irc ire irf iri irm iro irr irs is- isc ise isf isi ism iso isr iss m-f m-o m-r mc- mcc mce mcf mci mcm mco mcr mcs mec mee mef mei mem meo mer mes mfc mfe mff mfi mfm mfo mfr mfs mi- mic mie mif mii mim mio mir mis mmc mme mmf mmi mmm mmo mmr mms moc moe mof moi mom moo mor mos mrc mre mrf mri mrm mro mrr mrs msc mse msf msi msm mso msr mss o-i oc- occ ocf oci ocm oco ocr ocs oec oee oef oei oem oeo oer oes of- ofc ofe off ofi ofm ofo ofr ofs oic oie oif oii oim oio oir ois om- omc ome omf omi omm omo omr oms oo- ooc oof ooi oom ooo oor oos or- orc ore orf ori orm oro orr ors os- osc ose osf osi osm oso osr oss rcc rce rcf rci rcm rco rcr rcs re- rec ree ref rei rem reo rer res rfc rfe rff rfi rfm rfo rfr rfs ric rie rif rii rim rio rir ris rmc rme rmf rmi rmm rmo rmr rms roc roe rof roi rom roo ror ros rrc rrf rri rrm rrr rrs rsc rse rsf rsi rsm rso rsr rss scc sce scf sci scm sco scr scs se- sec see sef sei sem seo ser ses sfc sfe sff sfi sfm sfo sfr sfs sic sie sif sii sim sio sir sis smc sme smf smi smm smo smr sms soc soe sof soi som soo sor sos sr- src sre srf sri srm sro srr srs ss- ssc sse ssf ssi ssm sso ssr sss